Frederik, Crown Prince of Denmark and Mary Donaldson

After meeting in a Sydney pub in 2000, sparks flew between the down-to-earth couple. A long-distance courtship ensued, with the pair eventually tying the knot on May 14, 2004 in Frederik’s native country of Denmark. Upon their marriage the Danish Parliament passed a special law (dubbed Mary’s Law), granting Mary Danish citizenship.

Prince Rainier and Grace Kelly

The already regal Hollywood actress married her prince in Monaco on April 18, 1956. The 600 guests included silver screen legends Cary Grant and Ava Gardner, while the ceremony was watched by an estimated 30 million people on televisions worldwide.

Prince Charles, Prince of Wales to Lady Diana Spencer

Thirty-five hundred guests made up the congregation at St Paul’s Cathedral, London as Prince Charles and Lady Diana Spencer were wed on July 29, 1981. An estimated 750 million people watched the ceremony worldwide in what was billed as a ‘fairytale wedding’, and the ‘wedding of the century.’

Crown Prince of Japan, Naruhito and Masako Owada

Heir apparent to the Chrysanthemum Throne of Japan, Prince Naruhito married Masako Owada, a former diplomat in the Japanese Foreign Ministry, on June 9, 1993. The couple were married at the Imperial Shinto Hall in Tokyo before 800 invited guests and an estimated media audience of 500 million people worldwide.